000150277 001__ 150277
000150277 005__ 20251017144639.0
000150277 0247_ $$2doi$$a10.1093/mnras/stu1955
000150277 0248_ $$2sideral$$a142478
000150277 037__ $$aART-2014-142478
000150277 041__ $$aeng
000150277 100__ $$0(orcid)0000-0002-6211-499X$$aAsorey, J.
000150277 245__ $$aRedshift-space distortions from the cross-correlation of photometric populations
000150277 260__ $$c2014
000150277 5060_ $$aAccess copy available to the general public$$fUnrestricted
000150277 5203_ $$aSeveral papers have recently highlighted the possibility of measuring redshift-space distortions from angular auto-correlations of galaxies in photometric redshift bins. In this work, we extend this idea to include as observables the cross-correlations between redshift bins, as an additional way of measuring radial information. We show that this extra information allows us to reduce the recovered error in the growth rate index γ by a factor of ∼2. Although the final error in γ depends on the bias and the mean photometric accuracy of the galaxy sample, the improvement from adding cross-correlations is robust in different settings. Another factor of 2–3 improvement in the determination of γ can be achieved by considering two galaxy populations over the same photometric sky area but with different biases. This additional gain is shown to be much larger than the one from the same populations when observed over different areas of the sky (with twice the combined area). The total improvement of ∼5 implies that a photometric survey such as Dark Energy Survey should be able to recover γ at the 5–10 per cent from the angular clustering in linear scales of two different tracers. It can also constrain the evolution of f(z) × σ8(z) in few bins beyond z ∼ 0.8–0.9 at the 10–15 per cent level per bin, compatible with recent constrains from lower z spectroscopic surveys. We also show how further improvement can be achieved by reducing the photometric redshift error.
000150277 540__ $$9info:eu-repo/semantics/openAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/
000150277 590__ $$a5.107$$b2014
000150277 591__ $$aASTRONOMY & ASTROPHYSICS$$b12 / 60 = 0.2$$c2014$$dQ1$$eT1
000150277 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000150277 700__ $$aCrocce, M.
000150277 700__ $$aGaztañaga, E.
000150277 773__ $$g445, 3 (2014), 2825-2835$$pMon. not. R. Astron. Soc.$$tMonthly notices of the Royal Astronomical Society$$x0035-8711
000150277 8564_ $$s932968$$uhttps://zaguan.unizar.es/record/150277/files/texto_completo.pdf$$yVersión publicada
000150277 8564_ $$s2786994$$uhttps://zaguan.unizar.es/record/150277/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000150277 909CO $$ooai:zaguan.unizar.es:150277$$particulos$$pdriver
000150277 951__ $$a2025-10-17-14:30:51
000150277 980__ $$aARTICLE